Certify your emails using the blockchain

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Néstor Palao
Néstor PalaoMaker@nrpalao · Cofounder at
Hi Product Hunt, We are Stampery, we provide legally binding proofs of existence, integrity and ownership of any file or email, using the Bitcoin blockchain. You just have to upload a file, choose whether to store a backup on our servers or not, and click a button. We also create a unique email address for each user, so you can just create a rule in your email and BCC everything. The best interface is the one that doesn't even exist. Thanks you all guys!
Michael Lisovetsky
Michael LisovetskyHunter@_liso_ · Founder @JUICELabsNYC.
Extremely easy to use! Simply BCC your Stampery email address to notarize your message.
Muneeb Ali
Muneeb AliHiring@muneeb · CEO, Blockstack PBC. Princeton PhD.
They hide a lot of complexity behind their easy-to-use interface. That's hard to pull off. Great work!
Néstor Palao
Néstor PalaoMaker@nrpalao · Cofounder at
@muneeb Thanks a lot Muneeb, you are awesome!
Anna@abracarioca · Working for Duolingo
Found out about Stampery at Menorca Millennials showcase this weekend, great team and very interesting use of the blockchain...
Luis Iván Cuende
Luis Iván CuendeMaker@licuende · CEO, Aragon One
@abracarioca thanks Anna! Really appreciate it :)
Christian Van Der H.
Christian Van Der H.@cvander · Co-founder, Platzi
This is an awesome idea. We're all waiting for having all our legal stuff in the blockchain.
Néstor Palao
Néstor PalaoMaker@nrpalao · Cofounder at
@cvander thanks Christian!! Sounds better coming from you. Btw, congrats for all what you are achieving with Platzi, here you have a fan :)